The parliamentary panel, which had squabbled over the list of witnesses and the question of summoning Prime Minister Manmohan Singh and NDA government's telecom ministers in its last meeting on June 19, has decided to call corporate players and the political executive involved in the decision-making process.

According to sources, JPC chairman PC Chacko started the meeting by circulating a list of witnesses that he thought should be summoned before the committee starts finalising its report. This list included suggestions made by members.

Sources said that while it did not include the name of Prime Minister Manmohan Singh, it had names of former prime minister Atal Bihari Vajpayee, former finance minister P Chidambaram, former telecom ministers A Raja and Dayanidhi Maran, Opposition leader Sushma Swaraj and others.

Sources said BJP member Jaswant Singh objected to inclusion of Vajpayee's name and pointed out that he had no role and his health would never permit his appearance before JPC.

As other members also protested, the list was withdrawn and copies were taken away from everybody. Sources said it was then decided that Chacko would speak to all members, take suggestions on the list of witnesses and then draw up a final list before the next meeting on July 10.

A senior member said, "in principle, it has been decided that the political executive and corporate officials would now be called. We have called administrators and regulators. So now we also need to call other stakeholders." After the decision, the members grilled the Enforcement Directorate over the pace of investigation. CPI MP Gurudas Dasgupta pointed out that an FIR was first filed in March 2010, but the Enforcement Directorate had failed to complete a single investigation in over two years.

The focus shifted to unearthing the money trail and ED gave a detailed presentation on how companies had flouted provisions of Foreign Exchange Management Act (FEMA) and Prevention of Money Laundering Act (PMLA).

Members including Dasgupta and BJP's Ravi Shankar Prasad wanted to know whether all the cases being probed by the agency came under Fema. Agency officials are learnt to have said that while most cases pertained to Fema, it was investigating certain issues under the Prevention of Money Laundering Act (PMLA) also.

Members like DMK's T Siva and Congress' Manish Tewari wanted to know whether ED has been able to establish 'illegal gratification' allegedly paid to the Karunanidhi family-owned Kalaignar TV.

CBI is reported to have described the 200-crore inflow into Kalaignar TV as 'illegal gratification' allegedly in exchange for the spectrum allocation made by A Raja. In its presentation, ED showed in detail the backend money trail inflow into Kalaignar TV.